package com.mfjhss.springclooud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

@Service
public class PaymentService {

    /**
     * 正常访问
     * @param id
     * @return
     */
    public String paymentInfo_OK(Integer id){
        return "线程池：  "+Thread.currentThread().getName()+"   paymentInfo_OK;Id:   "+id;
    }

//    /**
//     * 正常访问
//     * @param id
//     * @return
//     */
//    public String paymentInfo_TimeOut(Integer id){
//        try {
//           TimeUnit.SECONDS.sleep(3);
//        } catch (InterruptedException e) {
//           e.printStackTrace();
//        }
//        return "线程池：  "+Thread.currentThread().getName()+"   paymentInfo_TimeOut;Id:   "+id;
//    }

    /**
     * 正常访问
     * @param id
     * @return
     */
    @HystrixCommand(fallbackMethod = "paymentInfo_TimeOutHandler",commandProperties = {
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds",value = "3000")
    })
    public String paymentInfo_TimeOut(Integer id){
        int timeNumber = 3;
        try {
           TimeUnit.SECONDS.sleep(timeNumber);
        } catch (InterruptedException e) {
           e.printStackTrace();
        }
        return "线程池：  "+Thread.currentThread().getName()+"   paymentInfo_TimeOut;Id:   "+id+"耗时： "+timeNumber;
    }

    public String paymentInfo_TimeOutHandler(Integer id){
        return "调用支付接口超时或异常：线程池：  "+Thread.currentThread().getName()+"   paymentInfo_TimeOutHandler;Id:   "+id+"   兜底方法";
    }


    //====服务熔断
    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback",commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled",value = "true"),//是否开启断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold",value = "10"),//请求次数
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds",value = "10000"),//时间窗口期
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage",value = "60"),//失败率达到多少后跳闸
    })
    public String paymentCircuitBreaker(@PathVariable("id") Integer id){
        if(id<0){
            throw new RuntimeException("***********id 不能为负数");
        }
        String simpleUUID = IdUtil.simpleUUID();
        return Thread.currentThread().getName()+"调用成功，流水号： "+simpleUUID;
    }

    public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer id){
        return "id不能为负数，请稍后再试，id： "+id;
    }
}
